Ventilator.



G. H. WILLIAMS. VENTILATQR. APPLICATION IILED OCT. 17, 1913.

1, 1 2,05. Patented Feb. 9, 1915.

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CARL HENRY WILLIAMS, 0]? B'UFFALQ, NEW"? YORK.

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T all whom it may concern Be it known that I, CARL HENRY WIL- LIAMS, acitizen of the United States, residing at Buffalo, in the county of Erieand State of New York, have invented new and useful Improvements inVentilators, of which the following is a specification.

T his invention relates to the class of ventilators comprising ahorizontal hood or cowl rotatably mounted on an air shaft or pipe andcontaining means for condensing the wind as it enters the hood, in orderto increase the force of the draft through the ventilator andeffectually withdraw the foul air from the air shaft.

The object of my invention is to improve such ventilators with a view ofsimplifying their construction, reducing their cost and increasing theirefficiency.

In the accompanying drawings: Figure 1 is a longitudinal section of theventilator. Fig. 2 is a front viewthereof. Fig. 3 is a rear view of thesame. Fig. 4 is a perspective view of the deflectors removed from thehood and separated to more clearly show their construction.

Similar characters of reference indicate corresponding parts throughoutthe several views.

A. indicates the horizontal, cylindrical hood or cowl of the ventilatorwhich is open at both ends and preferably provided at its front end withthe usual flaring mouth or wind-deflecting flange D and on its rearportion with the customary vane G, which may be stiffe ed by stay-wiresG On its underside the hood has the usual neck B communicating with itsinterior and overlapping the fixed upright air-shaft or pipe C on whichthe hood is rotatably mounted by any suitable means. In the constructionshown in the drawings, this neck carries in ternal braces orbridge-pieces 7' and 7c and the air shaft C carries similar bridgepieces Z and m, and an upright shaft H is suitably fastened to the upperbridge pieces j and k and iournaled in the lower ones Z and m.

Within the front or inlet portion of the hood A are located a pluralityof wind deflectors E, F, F, arranged lengthwise of the hood andpreferably having approximately the form of hollow conical sections theconcave sides of which face the wall of the hood. Three of suchdeflectors are shown in the drawings, the two deflectors F, F beinglocated at opposite sides of the Specification of Letters Patent.

Application filed Gctober 17, 1913.

Patented Feb. 9., Mi l Serial 1 10. 795,691.

hood, while the deflector E is arranged be tween the upper portions ofsaid side-deflectors F. The apexes of the several deflectors meetapproximately in the axis of the hood near its inlet end, and from thispoint. the deflectors diverge rearwardly and extend outwardly to thesurrounding wall of the hood, their outer edges 6 and 9 being riveted.or otherwise secured to the hood. The deflectors are fastened to theinterior of the hood only at their longitudinal edges, leaving draftpassages or openings bc tween their curved rear ends and the wall of thehood. The contiguous sides of the forwardly-converging deflectors arelikewise fastencd together at c and d.

The lower front portion of the hood below the deflectors E and F istightly closed by a shield preferably composed of sections N which meetin a vertical joint Z1 and are respectively stamped integral with theside deflectors F to form downward extensions thereof. These shieldsections may be soldered or otherwise fastened together at their meetingedges while their outer edges may be likewise secured to the wall of thehood, thus forming with the deflectors E and F a water-tight coveringover the up per end of the neck B and the air shaft C.

As shown, the side deflectors F preferably extend rearwardly to orsomewhat be yond the rear side of the air shaft C to prevent water fromdripping from the rear ends of the deflectors into said shaft.

In the use of the ventilator, the wind. entering the front end of thehood passes between the deflectors E and F and the surrounding wall ofthe hood and escapes at the rear end of the hood. withdrawing the foulair from the air-shaft C. In passing through the open-ended fiues formedbetween the defiectors and the hood, the wind is condensed. orcompressed and on emerging at the rear ends of the deflectors it isallowed to expand, thereby materially increasing the force of the draftand the eflido not therefore wish to be limited to the use of threedeflectors, nor to the particular details shown in the drawings as thesame may obviously be modified within the scope of the appended claims.

I. claim as my invention:

1. A ventilator, comprising a rotatable, substantially horizontal hoodopen at both ends and provided on its underside with an opening adaptedto communicate with an air-shaft, and a plurality of wind deflectorsarranged within the hood at different sides thereof, said deflectorsconsisting of approximately conical sections converging toward the inletend of the hood, the wide rear portions of the deflectors extendingoutwardly to the wallof the hood.

A ventilator, comprising a rotatable, substantially horizontal hood openat both ends and provided on its underside with an opening adapted tocommunicate with an air-shaft, apair of wind deflectors arranged withinthe hood at opposite sides thereof, and a third wind deflector arrangedin the upper portion of the hood between the firstnamed deflectors, saiddeflectors consisting of approximately conical sections convergingtoward the inlet end of the hood and the wide rear portions of thedeflectors extending outwardly to the wall of the hood.

3. A ventilator, comprising a rotatable,

substantially horizontal hood open at both ends and provided on itsunderside with an opening adapted to communicate with an air-shaft, winddeflectors arranged within the upper portion of the hood, saiddeflectors consisting of approximately conical sections convergingtoward the inlet end of the hood and having their wide rear portionsextended outwardly to the wall of the hood, and a wind and storm shieldextending downwardly from the inlet ends of said doflectors to thebottom of the hood.

4. A ventilator, comprising a rotatable, substantially horizontal hoodopen at both ends and provided on its underside with an opening adaptedto communicate with an air-shaft, a pair of wind deflectors arrangedwithin the hood at opposite sides thereof, and a third wind-deflectorarranged in the upper portion of the hood between the firstnameddeflectors, said deflectors consisting of approximately conical sectionsconverging toward the inlet end of the hood, said side deflectors beingprovided at their front ends with meeting shield sections which extenddownwardly to the bottom of the hood.

CARL HENRY WILLIAMS.

lVitnesses LILLIAN M. WILLIAMS, JOHN lVILLIAMs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

